are they watching, and why? >>> the struggle. new jersey governor chris christie is in the middle of a fight erupting in public over his own weight. tonight what a former white house doctor said about him and how he fired back. >>> and one year from tonight, if you can believe it, opening ceremonies at the winter olympics. tonight we'll show you the resort town packed with palm trees where they hope to have snow on the slopes a year from now. "nightly news" begins now. >>> from nbc news world headquarters in new york, this is "nbc nightly news" with brian williams. >> good evening. for the folks who have moved to an all-electronic web-based life, today's news maybe wasn't all that impactful. but for the folks with mailboxes in cities and towns across this country on dirt roads or in apartment buildings, there's always been mail on saturday. six days a week, since the time of abraham lincoln.